用层次分析法评价青白江区长流河水质现状

采用层次分析法对青白江区长流河的农水局和古城桥断面监测点采样水质进行分析,根据流域内的水环境现状、流域内水污染物排放特点,分别选取了CODCr、氨氮和总氮3个指标进行计算.结果表明:长流河常年氨氮和总氮严重超标,不同水期氨氮和总氮的污染指数均大于CODCr,总氮污染最严重,大于氨氮,且远远大于CODCr.因此,氨氮治理是长流河流域水环境综合整治和污染源控制工程的重点.

Assessment on Water Quality of Perennial River in Qingbaijiang District by Analytic Hierarchy Process

Analytic hierarchy process was applied and water at monitoring points of section in agricultural water authority and old town bridge of Qingbaijiang was sampled and analyzed.According to present water environment and characteristics of water pollutants,three indicators of CODCr,ammonia and total nitrogen were calculated.The results show that the amount of ammonia and total nitrogen of perennial river have exceeded the required standards throughout the year and ammonia nitrogen pollution intensity was significantly greater than CODCr in different water period.Total nitrogen pollution was the most serious,followed by ammonia,far greater than CODCr.Ammonia treatment is the key point of comprehensive water environment management and pollution source control projects of perennial river.